承压热冲击下反应堆压力容器中流体的瞬态混合特性

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基金项目:

国家重点基础研究发展规划资助项目(G1999022308)；中俄国际合作研究项目(2003-2004)

Transient Mixing Characteristic of Reactor Pressure Vessel under Pressurized Thermal Shock

1. State Key Laboratory of Multiphase Flow in Power Engineering, Xian Jiaotong University, 710049, China;
2. Nuclear Power Institute of Chian, Chengdu, 610041, China

摘要: 热冲击下,反应堆压力容器中的热工水力特性是一个与反应堆安全密切相关的课题。本文在1/10的模型体上进行了高温高压下安全注水时流体的瞬态混合特性实验,得到了在有回路流动和无回路流动时以及不同的环腔流体温度下的混合特征。结果表明,环腔无流动时,随着安全注水流速的提高,混合函数下降得更快,幅度更大;环路有流动时,混合函数变化缓慢;当环腔内的流体温度达到一定的数值后,压力容器部分区域的混合函数发生明显变化。
- 承压热冲击 /
- 压力容器 /
- 安全注水 /
- 瞬态 /
- 混合函数
Abstract: The thermal/fluid characteristic of reactor pressure vessel under PTS is a critical issue related to the reactor safety. In this paper, an experiment is carried out to study the transient mixing characteristic un-der high pressure and temperature on a 1/10 scaled model, and the result is obtained under the following con-ditions: with and without loop flow, different temperature of work medium. The results shows at higher injec-tion flow rate the θ will drop at larger speed when there is no loop flow; with loop flow the θ will change relative slowly; and above certain temperature the θ in some measurement area will remarkably change. These results will be helpful to the further integrity analysis of reactor pressure vessel.
- PTS /
- Pressure vessel /
- Safety injection /
- Transient /
- Mixing function